Royal Highness

Coco needs to stay wet always. Being a coco grower myself. I think your ph is out of range. You can not over water in coco unless you let it sit in run off. For vegging you need 5.8 ph in 5.8 ph out in run off test. Flowering is 6.1 or 6.2. Calmag is generally needed in coco. Heavy irrigation is what makes plants thrive in coco substrate. If your ph numbers are not right flush with ph water till run off is right. Then reapply nutrition at right ph. Let drain good and put under light again. Don't take soil advice for coco grows.